DETECTIVES investigating a serious assault in North Yorkshire are appealing for a potential key witness to come forward.

The assault happened in Durham Place, Scarborough, at around 10pm on Friday.

A spokesman for North Yorkshire Police said: "A 53-year-old man sustained life-threatening injuries and is currently being treated at Scarborough District Hospital.

"Following inquiries, three local men, aged 31, 26 and 20, have been arrested and charged in relation to the incident."

They are due to appear at Scarborough Magistrates’ Court tomorrow.

"In the meantime, officers need to speak to a man who is known to have walked along Durham Place and into North Marine Road while the incident was ongoing," the spokesman added.

"This man is not suspected of any offences and could be a key witness."

Phone North Yorkshire Police with information on 101, select option 2, and ask for the Scarborough Serious Crime Team or email Scarborough&RyedaleSCT@Northyorkshire.pnn.police.uk

Alternatively, phone Crimestoppers anonymously on 0800 555111.

Quote incident number 12170165991.